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Mathematics, 06.07.2020 23:01 cselder

Six country music bands and 3 rock bands are signed up to perform at an all-day festival. How many different orders can the bands play in if the following conditions apply?
(a) there are no restrictions on the order
orders
(b) all the bands of each type must perform in a row
orders

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Six country music bands and 3 rock bands are signed up to perform at an all-day festival. How many d...
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